Normal for a day, but then warm-up continues

A "huge Canadian high pressure" system is blowing in the chilliest temperatures we've seen in three weeks, though today's forecasted high in the upper 40s is close to normal for this time of year.

"This is typical weather for this time of year," said National Weather Service meteorologist Kevin Birk. "But it's been so warm, it feels real bad now."

After shivering through today, we will get back to temperatures that have marked most of March: Above average. The highs are expected to be in the upper 60s Tuesday and Wednesday, dip into the 50s on Thursday, then back into the 60s Friday and Saturday.

The Chicago Weather Center says Chicago's "incredibly mild March" remains on track to become the warmest start to spring ever. And it could continue into April, according to long-range forecasts.

"There's an enhanced chance for above average temperatures through the month of April," Birk said.